Testing tool



April 4, 1939.

R. svADLENAK TESTING TOOL Filed July 5, 195s 2 sheets-snaai;

April 4, 1939. R. svADLl-:NAK

TESTING TooLl Filed July 5, 1958 ATTO R N EYS Patented Apr. 4, 1939UNITED STATES :nismo PATENToFi-lca 4Clalms.

My invention relates to well tools and more particularly to testingtools for testing formations discovered in the process of drilling foroil, gas and water wells.

One of the principal objects of my invention is to provide a testingtool that canbe readily attached to a standard drill pipe stem or tubingordinarily used in the drilling of wells and operable by said pipe ortubing ina manner to permit 1o samples of iiuid to be 'tested to bebrought to the surface for inspection and testing.

Another object of my invention is to provide a testing tool ofithe abovedescribed character equipped with means for receiving therein a sampleof the fluid to be tested and operable in a 'manner to prevent otherfiuids from adjacent strata from becoming mixed with said rst mentioneduid as the tool is withdrawn from the` hole for testing purposes,therebypermitting samples from desired depths to be obtained withouthaving others mixed therewith.

A special object of my invention is to provide a tool of the abovedescribed character so constructed and arrangedu as to permit fluid tobe introduced within the well for acidifying the same at a desiredlocation therein.

A further object of my invention is to provide a tool of the abovedescribed character which is simple in construction, durable in use,highly eicient in operation, readily attachabie to standard drill stempipes or tubing without modifying the saine, and economical inmanufacture.

Other objects and advantages will be apparent from the followingdescription, appended claims and annexed drawings.

Referring to the drawings wherein like reference characters designatelike parts throughout the several views: f

Figure l is a side elevation of my invention.

Figure 2 is a longitudinal sectional view thereof.

' 4 Figure 3 is a view similar to Figure 2 illustrating the tool in4extended position.

Figure t is a detail sectional view illustrating the strainerconstruction.

Figure 5 is a sectional view taken on the line 5-5 of Figure 4.

Figure 6 is an enlarged detail sectional view of the head construction.

Figure -'l is an enlarged sectional'view of the seat block.

Figure 8 is a detail longitudinal sectional view .of a modified form. e

Figure 9 is a' detail perspective view of the fili 1toothed disk of thehead construction used in the e `modifled form. I

Figure 10 is a detail perspective view of the toothed sleeve whichcoacts with the disk illustrated in Figure 9.

Figure l1 is a detail longitudinal sectional view of another modifiedform.

In teaching my invention, in the preferred form illustrated in Figures 1to 7, there is illustrated the lower end of a drill pipe tubing 5 havingthreaded on the lower end thereof a sleeve 6 which in turn has threadedin the lower end therel0. of a subjacently extending reducer 'I havingarranged in the lower end section thereof a. check valve 8 andexteriorly thereof a circumferentially extending collar 9 spaced abovethe lower end.

Threaded into the lower end of the reducer I 1B is the upper end of animperforate pipe I0. The lower end of the imperforate pipe I0 hasthreaded thereon a sleeve I I in which is threaded the upper end of aperforated pipe I2. Said upper end of the pipe I2 is fashioned with aplug section I3 20 having a threaded bore extending therethrough inwhich is secured the upper end I 4 of a downwardlyextending filter orstrainer I5, the latter preferablyconstructed of wire encircling aperforated pipe. The lower end section of the g5 pipe i2 is providedwith a plurality of perforations I6. Secured within the lower endthereof is a bit Il effecting closure of the lower end of said pipe l2.

Slidably mounted on the pipe Il) is a head con- 30 struction I8comprising a sleeve I9 provided with upper and lower spaced threadedsections I9a. and ISI: respectively. Threaded within the lower section|911 is an apertured disk 2t about said pipe I0. Mounted 4on said disk2U is a gasket 35 20a embracing the pipe It and is secured thereaboutand on said disk by means of an adjustable packing nut 20h threaded intothe upper section ida.

The disk 2li is positioned within the upper part 40 of the section I9band effects atight t therewith to prevent accidental unthreadingtherefrom. The lower face of the disk 2U normally engages the upper endof the sleeve II as clearly illustrated in Figure 2 of the drawings whenthe pipe 45 I2 is in retracted position as hereinafter more fullydescribed. The lower. section I9b of the sleeve I9 extends anappreciable distance sub- Vjacent the disk 20 and has threaded thereinand in engagement with the disk 20 the upper end of 50 a tube or pipe 2lextending downwardly about the pipe I2.

Said tube 2 I is spaced from s'aid pipe I2 to provide therebetween asample receiving. chamber C for a purpose hereinafter set forth. Thelower seat block construction 23. The lower` portion of said collar hasthreaded therein apacking nut 24. Also threaded within said collar is aring 25 abutting the lower end of the tube 2|. Interposed between thenut 24 and ring 25 is a gasket 26 for engaging the outer wall of thepipe I2 to prevent fluid leaking therebetween. The nut 24 constitutes ameans for adjusting the gasket 26 relative to the pipe I2. The outerface of the collar 22 has threaded thereon the lower end of a tubularsvhield 2'|, the upper end of which is provided with a collar 28securing thereto a gasket 28 engaging the outer wall of the drill pipe 5whereby to permit relative longitudinal movei I Secured about the pipe Iis a coil spring 30, the upper end of which engages the collar 9 and thelower end the nut 20h and thereby serves to normally urge the pipe I0upwardly and maintain the sleeve in engagement with the disk20 of thehead construction I8. Spaced above the upper end of the shield 21 is acollar 3| xed on the drill stem pipe or tubing 5. Interposed between`said collar3| and collar 28is a coil spring 32 seat block by the floorof the well pressure is applied to the pipe 5 causing the lower endsection of the perforated pipe l2 to extend downwardly into theformation below the seat block and thus permit liquid and the like toilow into the pipe I2 through the perforations I6. liquid iiowingtherein, should it be under sulficient pressure, will flow upwardly tothe surface andj a. sumcent quantity thereof obtained for testingpurposes. When a sufficient quantity has thusbeen obtained, the pipe 5is^lifted thus causing the pipe l2 to be retracted upwardly through theseat block 23,

In instances where the pressure is not suilicient to force the fluid tobe sampled upwardly through the pipes I2, I6 and 5, a suiicient samplemay be obtained by permitting the pipe I2 to extenda partial distancebelow the seat block 23 thus permitting a suflcient quantity of thefluid to flow through the apertures I6 below the seat block into thepipe I 2 and through the apertures above the seat block into the chamberbetween the tube 2| and pipe I2. Thus when the pipe I2 is actuatedupwardly to closed or retracted position, a suiiicient quantity of thefluid will be maintained within the lower end of the pipe I2 and tube 2|to permit a sampling thereof when the assembly or tool is withdrawn fromthe bore of the well. The strainer I5 serves to effect a screening of"fluid flowing upwardly through the pipes I0 and 5 to prevent foreignmatter and. the like lfrom clogging the latter. The check valve 8 servesto prevent back ow of said iluid. In some instances where it is sensedby the driller that the iioor of the well is directly above gas, wateror the like, the bit may be used as a drilling tool to eiiect gradualpenetration into the floor without breaking through the separating p Inthis position.

end of the tube or pipe 2| is threaded witnm the upper portion' of acollar 22 forming part oi' a.

When it ls desired to acidify a well, the check valve 3 may be removedand the tool lowered a desired distance and operated to extend the pipeI2 a. suicient distance downwardly beyond the seat block 23 to permitiluid pumped downwardly through the pipes to be separated outwardlythrough the perforations |6.` By this means it can be readily understoodthat the bore of the well may be acidiiied at any desired location.

In some instances it becomes necessary to seal the "rat hole and forthis purpose I have provided a 'novel form of construction illustratedin Figures 8 to l-inclusive. In said form the collar 22 of the seatblock 23 is integrally fashioned with a subjacent section 35 providedwith lefthand threads on the exterior face thereof. Said threads arespaced below the right-hand threads which secure the lower end of theshield 21 to said seat block. Threaded on said section 35 is theupperanged end 36 of a tube SLthe lower end of which is threaded withinthe upper shouldered end ofv a coupling 38. The tube 3'I embraces thelower perforated end of the pipe |2v as clearly illustrated in Figure 8.A gasket 39 and an adjustable packing nut 4|] are provided in the lowerend of the coupling 38 about the lower end of the pipe I2 to preventleakage of iiuid from within said pipe |2. Mounted on the tube 31between the flanged end 36 thereof and the coupling 38 are a pluralityof flexible packing washers or rings 4|.

The various diameters of said rings 4I are such as to form asubstantially pineal configuration when said rings are in assembledcondition whereby to contact the bore of the well and seal the rat hole.In this form of construction the upper end of the sleeve II is providedwith teeth 42 for engagement with similar formed teeth 43 fashioned onthe lower face of the disk 20. Thus, when it is desired to seal the rathole, the tool is lowered into the well until the rings 4| effectsealing position and the pipe |0 extending to testing position beyondthe rings 4|. Upon the test wise rotates the tube 2| and seat block 23in a.

like direction. Rotation of the seat block 23 in a clockwise directioneiiects unthreading of the section 35 from the flanged end 36 of thetube 31 due to said section 35 and flange 36 being connected thereto bymeans of left-hand threads. Upon disconnection of the seat block 23 fromthe tube 31, the seat block together with the pipe |2 may be readilywithdrawn from the well thereby leaving the sealing member within thewell. The sealing member comprising the rings 4I and tube 31 may bethereafter drilled out of the bore in the usual manner.

As illustrated in Figure 11, the shield 2`| may be eliminated for use inconnection with the mod-r iiied form illustrated in Figures 8 to 10. Inthis instance, the lower end of the pipe 2| has threaded theretov asleeve 45, the lowerr end of ywhich is provided with left-hand threadsfor engagement with the upper flanged end 46 of the tube 41 of a similarconstruction as said tube 3 1.

When the tube 2| is rotated in a clockwise direction, the anged end 46of the tube 4l will be disconnected therefrom due to the left-handthreads as in the instance of the previously described modified form.

From the foregoing it willbe apparent that I have provided a simple,durableand eiiicient tool whereby samples of fluid from the bore of awell may be readily obtained for inspection and testing purposes.Furthermore, my novel form of tool provides means whereby'the well maybe acidifled and also means for sealing the rat hole thereof.

It is to be understood that various changes and modifications in theconstruction and arrangement of the parts may be resorted to withoutdeparting from the spirit -of the invention or scope of the appendedclaims.

What I claim is:

1. In combination with a drill stem tube, a pipe coupled on said tube, aperforated pipe fixed on said first mentioned pipe, a head slidablymounted on said first mentioned pipe, a tubular member connected at theupper end thereof to said head and spaced relative to said perforatedpipe, a seat block mounted on the lower end of said member and having anopening slidably receiving said perforated pipe whereby to permit saidperforated pip'e to extend beyond said block in a manner that fluidsubjacent said block will flow into said perforated pipe upon downwardmovement of the latter by said drill stem tube, and a spring about saidrst mentioned pipe engaging said head to normally maintain saidperforated pipe in raised position within said member.

2. In combination with a drill stem tube, a pipe coupled on said tube, aperforated pipe xed on said first mentioned pipe, a head slidablymounted on said first mentioned pipe, a tubular member connected at theupper endthereof to said head and spaced relative to said perforatedpipe, a seat block mounted on the lower end of said member and having anopening slidably receiving said perforated pipe whereby to permit saidperforated pipe to extend beyond said block in a manner that uidsubjacent said block will ow into said perforated pipe upon downwardmovement of the latter by said drill stem tube, a spring about saidfirst mentioned pipe engaging said head to normally maintain saidperforated pipe in raised position within said member, and a lshieldcarried by said drill stem tube and exwhereby tc protect said assembledparte.,

3. In combination with a,drill stem tube, a pipe coupled on said tube, aperforatedpipe fixed on said rst mentioned pipe, a head slidably mountedon said first mentioned pipe, a tubular member connectedat the upper endthereof to said head and spaced relative to said perforated pipe, a seatblock mounted on the lower end'of said member and having an openingslidably receivingsaid perforated pipe whereby to permit said perforatedpipe to extend beyond said block in a manner that fluid subjacent saidblock will flow into said perforated pipe upon down- Ward movement ofthe latter by said drill stem tube, a spring about said first mentionedpipe engaging said head to normally maintain said perforated pipe inraised position within said mem.

coupled on said tube, a perforated pipe fixed on said rst mentionedpipe, a head slidably mounted on said iirstmentioned pipe, a tubularmember connected at the vupper end thereof to said head and spacedrelative to said perforated pipe, a seat block mounted on the lower rendof said member and having an opening slidably receiving said perforatedpipe whereby to permit said perforated pipe .to extend beyond saidblockl in a manner that fluid subjacent said block will flow into saidperforated pipe upon downward movement of the latter by said drill stemtube, a spring about said Afirst mentioned pipe engaging said head tonormally maintain said perforated pipe in raised position within saidmember, a shield carried by said drill stem tube and extendingdownwardly about said tubular member whereby to protect l said assembledparts, a sealing member carried by said block and adapted to seal asection of a bore of'a well, and means operable by said drill stem tubefor disconnecting said sealing member from said block to permitWithdrawal of the latter from said well.

RUDOLPH SVADLENAK.

